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G5908 Aldrich

(±)-Geosmin solution

2 mg/mL in methanol, ≥97%

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Properties

Related Categories Alcohols, Building Blocks, C11 to C30+, Chemical Synthesis, Organic Building Blocks,
assay   ≥97% (calc. on dry substance, GC)
  ≥97%
concentration   2 mg/mL in methanol
storage temp.   −20°C

Description

Frequently Asked Questions

Frequently Asked Questions are available for this Product.

Other Notes

The (−)-enantiomer is the principal component of beet aroma.

Packaging

1 mL in glass bottle

Price and Availability

Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
Precautionary statements 
RIDADR 
UN1230 - class 3 - PG 2 - Methanol, solution
WGK Germany 
2
Flash Point(F) 
51.8 °F
Flash Point(C) 
11 °C

Frequently Asked Questions

Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis. These documents are located on the product detail page under Useful Links & Tools. Click on the following link to search for a Certificate of Analysis. Please click the following link to see the details on our Product Dating Information.
How do I get lot-specific information or a Certificate of Analysis?
A Certificate of Analysis is available by lot number and can be obtained through our Advanced Search Option: http://www.sigmaaldrich.com/catalog/AdvancedSearchPage.do
How do I find price and availability?
There are several ways to find pricing and availability for our products.  Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers. 
What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS. To access the shipping information for this material, use the link on the product detail page for the product, or search here. 
My question is not addressed here, how can I contact Technical Service for assistance?
Use the option to the right to "Ask a Question" by email of a Technical Service Scientist.
What can you tell me about the stereochemistry of Sigma-Aldrich's (±)-Geosmin products?
The geosmin products listed by Sigma-Aldrich (CAS Registry number [16423-19-1]) are synthetic, and would be exactly a 50:50 mixture of the (+) and (-) isomers. Specifically, the natural (-) isomer is (4S,4aS,8aR)-4,8a-Dimethyl-1,2,3,4,5,6,7,8-octahydronaphthalen-4a-ol. Therefore, the unnatural (+) isomer (the mirror image) is (4R,4aR,8aS)-4,8a-Dimethyl-1,2,3,4,5,6,7,8-octahydronaphthalen-4a-ol. This information has not been confirmed by a specific rotation measurement or chiral analysis, but is known based on the method of preparation.
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Protocols & Articles

Articles

GC Analysis of Trace Odors in Drinking Water on Equity®-5 after SPME using 50/30 μm DVB/Carboxen/PDMS Fiber

From our library of Articles, Sigma-Aldrich presents GC Analysis of Trace Odors in Drinking Water on Equity®-5 after SPME using 50/30 μm DVB/Carboxen/PDMS Fiber
Keywords: Chromatography, Gas chromatography, Mass spectrometry, Purification, Size-exclusion chromatography, Solid phase microextractions

Standard Methods 6040D: GC Analysis of Geosmin and 2-MIB on SLB®-5ms after SPME using 50/30 μm DVB/Carboxen/PDMS Fiber

From our library of Articles, Sigma-Aldrich presents Standard Methods 6040D: GC Analysis of Geosmin and 2-MIB on SLB®-5ms after SPME using 50/30 μm DVB/Carboxen/PDMS Fiber
Keywords: Chromatography, Gas chromatography, Purification, Solid phase microextractions

Peer-Reviewed Papers
15

References

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